Adjustable telescopic desk and chair

Abstract

The utility model discloses an adjustable telescopic desk and chair, which comprises a desk and a chair, the lower surface of the desk is fixedly provided with a U-shaped support, both ends of the chair are fixedly provided with plug-in mounting rods, the plug-in mounting rods are inserted in the U-shaped support in a sliding manner, the upper surface of each plug-in mounting rod is provided with a rack in an embedded manner, and the racks can be matched with a locking mechanism. The locking mechanism is installed on the upper surface of the U-shaped support in a communicating mode so that the locking mechanism can lock sliding of the inserting rod by being inserted into the rack. According to the utility model, through the design of the locking mechanism, the distance between the desk and the seat can be adjusted only by treading the treading plate, so that the operation difficulty is reduced, and the distance between the desk and the seat can be adjusted more conveniently.

Description

Technical Field

[0001] This utility model relates to the field of school desks and chairs technology, specifically to an adjustable telescopic school desk and chair. Background Technology

[0002] Patent CN112586888A discloses an adjustable telescopic student desk and chair, comprising: a fixed frame; a support plate mounted on the fixed frame; a seat lifting mechanism mounted on the support plate; and a table lifting mechanism mounted on the fixed frame. This design can be used by students in class, and the seat and table lifting mechanisms can easily adjust the height of the seat and table, thus accommodating students of different heights.

[0003] However, the aforementioned adjustable telescopic student desks and chairs require rotating multiple handles to adjust the distance between the desks and chairs, which takes more time and effort to complete the adjustment and is not convenient enough in actual use. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable telescopic desk and chair to solve the technical problem that adjusting the distance between desks and chairs in existing models requires rotating multiple sets of handles, which is cumbersome.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable telescopic desk and chair includes a desk and a seat. A U-shaped bracket is fixedly installed on the lower surface of the desk, and insert rods are fixedly installed at both ends of the seat. The insert rods slide into the U-shaped bracket, and a rack is embedded in the upper surface of the insert rod. The rack can engage with a locking mechanism, which is connected to the upper surface of the U-shaped bracket, so that the locking mechanism can lock the sliding of the insert rod by inserting it into the rack.

[0007] As a preferred embodiment of this utility model, a roller is fixedly installed on one end of the inner side of the insertion rod, so that the seat can roll by the roller when it is slid into the U-shaped bracket through the insertion rod.

[0008] As a preferred embodiment of this utility model, the locking mechanism includes two sets of mounting cylinders, both sets of mounting cylinders are connected and installed on the upper surface of the U-shaped bracket, and a toothed plate is slidably installed inside the mounting cylinder, the toothed plate can be slidably inserted into the U-shaped bracket and engaged with the rack.

[0009] As a further embodiment of this utility model, a guide post is fixedly installed on the upper surface of the mounting cylinder, the lower end of the guide post slides through the toothed plate, and a spring is fitted on the outer surface of the guide post, with the upper and lower ends of the spring respectively contacting the upper surface of the mounting cylinder and the upper surface of the toothed plate.

[0010] As a further preferred embodiment of this utility model, a sliding tube is connected to the upper surface of the mounting cylinder, and a winding column is rotatably installed between the other ends of the two sets of sliding tubes. A pressing plate is fixedly installed on the upper part of the outer surface of the winding column, and a top fixing plate is fixedly installed on the lower part of the outer surface of the winding column. The top fixing plate can be pressed against one end of the U-shaped bracket by rotating the winding column.

[0011] As a further preferred embodiment of this utility model, a steel wire rope is fixedly connected to the upper surface of the toothed plate. The steel wire rope passes through the mounting cylinder into the slide tube, and the end of the steel wire rope passes through the slide tube and is fixedly connected to the outer surface of the winding column.

[0012] Compared with the prior art, the advantages of this adjustable telescopic desk and chair are as follows:

[0013] 1. To adjust the distance between the desk and chair, the student simply needs to sit on the chair and press the locking mechanism to lift it within the U-shaped bracket. This separates the locking mechanism from the rack, releasing the locking force on the insertion rod. The student can then grasp the desk and push or pull the chair back and forth, causing the insertion rod to slide back and forth within the U-shaped bracket of the desk until the desired distance is achieved. Once the desired distance is reached, the student can release the pressure on the locking mechanism, allowing it to automatically reset and slide into the U-shaped bracket, engaging with the rack of the insertion rod. This locks the insertion rod within the U-shaped bracket, thus adjusting the distance between the desk and chair. The adjustment process only requires pressing the locking mechanism, greatly saving time and effort and making it more convenient to adjust the distance between the desk and chair.

[0014] 2. When a student sits on the chair and presses the foot pedal to rotate the winding column, the rotating column winds up the wire rope. The wound wire rope then slides vertically upwards through the slide tube, pulling the toothed plate inside the mounting cylinder. This causes the toothed plate to slide upwards from the U-shaped bracket and disengage from the rack, thus releasing the locking of the insertion rod. As the wire rope pulls the toothed plate, it slides along the outer surface of the guide column and presses against one end of the spring. The spring applies a spring-like pushing force to the toothed plate, which in turn applies a pulling force to the wire rope. This allows the student to grip the desk and push or pull the chair back and forth, causing the insertion rod to slide back and forth within the U-shaped bracket of the desk until a suitable distance is reached. After this, the foot pedal can be released, allowing the winding column to pass through... The elastic tension applied by the steel wire rope is pulled back to loosen the steel wire rope. During the rotation of the winding column, the top fixing plate at the lower end of the outer surface contacts one end of the U-shaped bracket to lock the rotational force. After the steel wire rope is loosened, the toothed plate is no longer under tension, allowing it to slide back into the U-shaped bracket and engage with the rack of the insertion rod through the spring-applied pushing force. This locks the insertion rod that has slid into the U-shaped bracket, thus realizing the adjustment of the distance between the desk and the chair. The entire adjustment process can be completed by simply pressing the foot plate, simplifying the adjustment steps, reducing the difficulty of operation, and allowing for quick operation without complicated instructions or learning processes. The desk and chair spacing can be adjusted in a short time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure in which the insertion rod slides into the U-shaped bracket in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure in which the rack and the locking mechanism fit together in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the locking mechanism in an embodiment of the present invention.

[0020] Reference numerals: 1. Desk; 101. U-shaped bracket; 2. Seat; 201. Roller; 202. Insert rod; 203. Rack; 3. Locking mechanism; 301. Mounting cylinder; 302. Guide column; 303. Spring; 304. Toothed plate; 305. Wire rope; 306. Slide tube; 307. Rewinding column; 308. Top fixing plate; 309. Step plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0022] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention should be understood according to the specific circumstances.

[0024] See Figures 1-3 As shown in the figure, an adjustable telescopic desk and chair according to an embodiment of the present invention includes a desk 1 and a seat 2. A U-shaped bracket 101 is fixedly installed on the lower surface of the desk 1. Insert rods 202 are fixedly installed at both ends of the seat 2. The insert rods 202 are slidably inserted into the U-shaped bracket 101. A rack 203 is embedded in the upper surface of the insert rods 202. The rack 203 can engage with a locking mechanism 3. The locking mechanism 3 is connected to the upper surface of the U-shaped bracket 101, so that the locking mechanism 3 can lock the sliding of the insert rods 202 by inserting into the rack 203.

[0025] A roller 201 is fixedly installed on one end of the inner side of the insertion rod 202, so that the seat 2 can roll by the roller 201 when it slides into the U-shaped bracket 101 through the insertion rod 202.

[0026] When adjusting the distance between desk 1 and seat 2, the student simply needs to sit on seat 2 and press the locking mechanism 3 to lift it within the U-shaped bracket 101. This separates the locking mechanism 3 from the rack 203, releasing the locking force on the insertion rod 202. The student can then grasp desk 1 and push or pull seat 2 back and forth, causing the insertion rod 202 to slide back and forth within the U-shaped bracket 101 of desk 1 until the appropriate distance is achieved, at which point the locking mechanism can be released. When the locking mechanism 3 is pressed, it automatically resets and slides into the U-shaped bracket 101, engaging with the rack 203 of the insertion rod 202. This locks the insertion rod 202 within the U-shaped bracket 101, thus enabling the adjustment of the distance between the desk 1 and the seat 2. The adjustment process only requires pressing the locking mechanism 3, greatly saving time and effort and making it more convenient to adjust the distance between the desk 1 and the seat 2.

[0027] like Figure 4 As shown, the locking mechanism 3 includes two sets of mounting cylinders 301. Both sets of mounting cylinders 301 are connected and installed on the upper surface of the U-shaped bracket 101. A toothed plate 304 is slidably installed inside the mounting cylinder 301. The toothed plate 304 can be slidably inserted into the U-shaped bracket 101 and engage with the rack 203.

[0028] A guide post 302 is fixedly installed on the upper surface of the mounting cylinder 301. The lower end of the guide post 302 slides through the toothed plate 304. A spring 303 is fitted on the outer surface of the guide post 302. The upper and lower ends of the spring 303 respectively abut against the upper surface of the mounting cylinder 301 and the upper surface of the toothed plate 304.

[0029] The upper surface of the mounting cylinder 301 is connected to a slide tube 306. A winding column 307 is rotatably installed between the other ends of the two sets of slide tubes 306. A pressing plate 309 is fixedly installed on the upper part of the outer surface of the winding column 307. A top fixing plate 308 is fixedly installed on the lower part of the outer surface of the winding column 307. The top fixing plate 308 can be pressed against one end of the U-shaped bracket 101 by rotating the winding column 307.

[0030] A steel wire rope 305 is fixedly connected to the upper surface of the toothed plate 304. The steel wire rope 305 passes through the mounting cylinder 301 into the slide tube 306, and the end of the steel wire rope 305 passes through the slide tube 306 and is fixedly connected to the outer surface of the winding column 307.

[0031] When a student sits on seat 2 and presses down on the foot pedal 309, it causes the winding column 307 to rotate. This rotating winding column 307 then winds up the wire rope 305. The wound wire rope 305 then slides vertically upwards through the slide tube 306, lifting the toothed plate 304 inside the mounting cylinder 301. This causes the toothed plate 304 to slide upwards from the U-shaped bracket 101 and disengage from the rack 203, thus releasing the lock on the insertion rod 202. Furthermore, the toothed plate 304... During the lifting process by the steel wire rope 305, the 04 will slide along the outer surface of the guide post 302 and press against one end of the spring 303. This allows the spring 303 to apply a spring-like pushing force to the toothed plate 304, which in turn applies a pulling force to the steel wire rope 305. Subsequently, students can grab the desk 1 and push and pull the seat 2 back and forth, causing the insertion rod 202 to slide back and forth within the U-shaped bracket 101 of the desk 1 until it is adjusted to a suitable distance. Then, the pressure plate can be released. The pressing of 309 causes the winding column 307 to be pulled and rotated by the elastic tension applied by the wire rope 305, thus releasing the wire rope 305. During the rotation, the winding column 307 will lock the rotational force by contacting one end of the U-shaped bracket 101 with the top fixing plate 308 at the lower end of its outer surface. After the wire rope 305 is released, the toothed plate 304 will not be subjected to tension, allowing it to slide back into the U-shaped bracket 101 by the spring thrust applied by the spring 303. The rack 203 of the insert rod 202 engages with the toothed plate 304, which locks the insert rod 202 that slides into the U-shaped bracket 101. This allows for the adjustment of the distance between the desk 1 and the seat 2. The entire adjustment process can be completed using only the step plate 309, simplifying the adjustment steps and reducing the difficulty of operation. Students can quickly get started without complicated instructions or learning processes, and can complete the adjustment of the desk and chair distance in a short time.

[0032] In summary, this utility model embodiment allows for adjusting the distance between desk 1 and seat 2 simply by pressing the foot pedal 309, which greatly saves time and effort, reduces operational difficulty, and makes adjusting the distance between desk 1 and seat 2 more convenient.

[0033] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable telescopic desk and chair, characterized in that: The device includes a desk (1) and a chair (2). A U-shaped bracket (101) is fixedly installed on the lower surface of the desk (1). Insert rods (202) are fixedly installed at both ends of the chair (2). The insert rods (202) are slidably inserted into the U-shaped bracket (101). A rack (203) is embedded in the upper surface of the insert rod (202). The rack (203) can engage with a locking mechanism (3). The locking mechanism (3) is connected to the upper surface of the U-shaped bracket (101). The locking mechanism (3) can lock the sliding of the insert rod (202) by inserting it into the rack (203).

2. The adjustable telescopic desk and chair according to claim 1, characterized in that: A roller (201) is fixedly installed on one end of the inner side of the insertion rod (202). When the seat (2) is slid into the U-shaped bracket (101) through the insertion rod (202), it can roll through the roller (201).

3. The adjustable telescopic desk and chair according to claim 1, characterized in that: The locking mechanism (3) includes two sets of mounting cylinders (301). Both sets of mounting cylinders (301) are connected and installed on the upper surface of the U-shaped bracket (101). A toothed plate (304) is slidably installed inside the mounting cylinder (301). The toothed plate (304) can slide into the U-shaped bracket (101) and engage with the rack (203).

4. The adjustable telescopic desk and chair according to claim 3, characterized in that: A guide post (302) is fixedly installed on the upper surface of the mounting cylinder (301). The lower end of the guide post (302) slides through the toothed plate (304). A spring (303) is fitted on the outer surface of the guide post (302). The upper and lower ends of the spring (303) respectively abut against the upper surface of the mounting cylinder (301) and the upper surface of the toothed plate (304).

5. An adjustable telescopic desk and chair according to claim 4, characterized in that: The upper surface of the mounting cylinder (301) is connected to a sliding tube (306), and a winding column (307) is rotatably installed between the other ends of the two sets of sliding tubes (306). A pressing plate (309) is fixedly installed on the upper part of the outer surface of the winding column (307), and a top fixing plate (308) is fixedly installed on the lower part of the outer surface of the winding column (307). The top fixing plate (308) can be rotated and pressed against one end of the U-shaped bracket (101) by the winding column (307).

6. An adjustable telescopic desk and chair according to claim 4, characterized in that: A steel wire rope (305) is fixedly connected to the upper surface of the toothed plate (304). The steel wire rope (305) passes through the mounting cylinder (301) into the slide tube (306), and the end of the steel wire rope (305) passes through the slide tube (306) and is fixedly connected to the outer surface of the winding column (307).

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